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Materials
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Synthesis and Applications of Metal–Organic Frameworks
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Synthesis and Applications of Metal–Organic Frameworks

A special issue of Materials (ISSN 1996-1944). This special issue belongs to the section "Porous Materials".

Deadline for manuscript submissions: 20 November 2025 | Viewed by 137

Special Issue Editor

Dr. Anastasia D. Pournara

E-Mail Website
Guest Editor
Department of Chemistry, Northwestern University, Evanston, IL 60208, USA
Interests: metal–organic frameworks; emerging contaminants; heavy metals; crystalline materials; luminescence; sorption; wastewater treatment
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Metal–organic frameworks (MOFs) represent a rapidly advancing class of porous crystalline materials composed of metal ions or clusters coordinated to organic ligands. Their tunable structures, large surface areas, and versatile chemical functionalities make them ideal candidates for a wide range of applications. This Special Issue focuses on recent advances in the synthesis, functionalization, and practical deployment of MOFs across various fields.

We welcome contributions exploring innovative synthetic strategies, including green synthesis, post-synthetic modification, and scalable production methods. This collection also highlights emerging applications of MOFs in gas storage and separation, catalysis, drug delivery, sensing, water purification, and energy storage. Special attention is given to structure–function relationships, stability under operational conditions, and the development of MOF composites and membranes for enhanced performance.

By bringing together fundamental and applied research, this Special Issue aims at providing a comprehensive overview of current trends and future directions in MOF science and technology. Researchers from academia and industry are invited to share original articles, reviews, and perspectives that advance our understanding and utilization of these promising materials.

Dr. Anastasia D. Pournara
Guest Editor

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Keywords

  • metal–organic frameworks (MOFs)
  • porous materials
  • gas storage
  • gas separation
  • catalysis
  • drug delivery
  • sensing
  • water purification
  • energy storage
  • applications of MOFs

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Published Papers (1 paper)

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Research

14 pages, 1824 KB  
Article
Homometallic 2D Cd2+ and Heterometallic 3D Cd2+/Ca2+, Cd2+/Sr2+ Metal–Organic Frameworks Based on an Angular Tetracarboxylic Ligand
by Rafail P. Machattos, Nikos Panagiotou, Vasiliki I. Karagianni, Manolis J. Manos, Eleni E. Moushi and Anastasios J. Tasiopoulos
Materials 2025, 18(20), 4647; https://doi.org/10.3390/ma18204647 - 10 Oct 2025
Abstract
This study reports on the synthesis, structural characterization and gas sorption studies of a homometallic 2D Cd2+ MOF and two heterometallic 3D Cd2+/Ca2+ and Cd2+/Sr2+ -MOFs based on the angular tetracarboxylic ligand 3,3′,4,4′-sulfonyltetracarboxylic acid (H4 [...] Read more.
This study reports on the synthesis, structural characterization and gas sorption studies of a homometallic 2D Cd2+ MOF and two heterometallic 3D Cd2+/Ca2+ and Cd2+/Sr2+ -MOFs based on the angular tetracarboxylic ligand 3,3′,4,4′-sulfonyltetracarboxylic acid (H4STBA). The homometallic 2D Cd2+ MOF with the formula [NH2(CH3)2]+2[Cd(STBA)]2−n·nDMF·1.5nH2O—(1)n·nDMF·1.5nH2O was synthesized from the reaction of CdCl2·H2O and 3,3′,4,4′-diphthalic sulfonyl dianhydride (3,3′,4,4′-DPSDA) with stoichiometric ratio of 1:1.3 in DMF/H2O (5/2 mL) at 100 °C. The two heterometallic Cd2+/Ca2+ and Cd2+/Sr2+ compounds were prepared from analogous reactions to this afforded (1)n·nDMF·1.5nH2O with the difference that the reaction mixture also contained AE(NO3)2 (AE2+ = Ca2+ or Sr2+) and, in particular, from the reaction of AE(NO3)2, CdCl2·H2O and 3,3′,4,4′-DPSDA with stoichiometric ratio 1:1.1:1.4 in DMF/H2O (5/2 mL) at 100 °C. Notably, compounds [CdCa(STBA)(H2O)2]n·0.5nDMF—(2)n·0.5nDMF and [CdSr(STBA)(H2O)2]n·0.5nDMF—(3)n·0.5nDMF are the first heterometallic compounds Mn+/AE2+ (M = any metal ion) reported containing ligand H4STBA. The structure of (1)n·nDMF·1.5nH2O comprises a 2D network based on helical 1D chain secondary building unit (SBU) [Cd2+(STBA)4−)]2−. The 2D sheets are linked through hydrogen bonding interactions, giving rise to a pseudo-3D structure. On the other hand, compounds (2)n·1.5nH2O and (3)n·1.5nH2O display 3D microporous structures consisting of a helical 1D chain SBU [Cd2+AE2+(STBA)4−)]. All three compounds contain rhombic channels along c axes. The three MOFs exhibit an appreciable thermal stability, up to 350–400 °C. Gas sorption measurements on activated materials (2)n and (3)n revealed moderate BET surface areas of 370 m2/g and 343 m2/g, respectively, along with CO2 uptake capacity of 2.58 mmol/g at 273 K. Full article
(This article belongs to the Special Issue Synthesis and Applications of Metal–Organic Frameworks)
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